machining process 2 mark.docx
Post on 01-Jun-2018
220 Views
Preview:
TRANSCRIPT
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
1/23
BHARATHIYAR COLLEGE OF ENGINEERING AND TECHNOLOGY
KARAIKAL
DEPARTMENT OF MECHANICAL ENGINEERING
TWO MARKS QUESTION AND ANSWER
SUBJECT : MET 45/ MACHINING PROCESS
YEAR : II YEAR A & B SEC
UNIT I
1. W!" !#$ "$ %!#'() '*$#!"'+) ,!+ -$ *$#'#$0 '+ ! !"$2
1) Turning
2) Facing.
3) Forming.
4) Knurling5) Chamfering
6) Thread cutting.
7) Drilling
8) oring
!) "ece##ing
1$) Ta%%ing
11) &roo'ing etc.
3. W!" !#$ "$ *#+,*$ *!#") ' ! !"$2l)ed
2) (ead#toc
3) Tail#toc
4) Carriage
5) Cro##*#lide
6) Tool %o#t
. W!" ) "$ !+ #$("$) ' ! !"$ -$02
The lathe +ed #hould +e 'er, #trong to -ith#tand cutting force# and 'i+ration#
during machining.
4. W!" !#$ "$ ()$) ' $!0)"',62
1 (ead#toc carrie# a hollo- #%indle -ith no#e to hold the -or %iece.
2.To mount the dri'ing and #%eed changing mechani#m#.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
2/23
5. W!" ) "$ !+ 0$#$+,$ -$"7$$+ %$ ,$+"$# !+0 0$!0 ,$+"$#2
i. /i'e center dri'e# and rotate# along -ith the -or %iece#.
ii. Dead center i# dri'en +, head#toc and it 0u#t #u%%ort# #u%%ort the other end of
the -or.
8. S"!"$ "$ %!#'() *!#") '(+"$0 '+ "$ ,!##!9$.
a. addle
+. Com%ound re#t
c.Cro## #lide
d. Tool %o#t.
7. W!" ) ! ,'*'(+0 #$)"2
mem+er or %art -hich i# mounted on the to% of the cro## #lide ha'ing a +a#e
graduated in degree#.
. L)" !+; '(# ";*$) ' !"$)2
1) ngine lathe.
2) ench lathe.
3) Tool room lathe
4) emi*automatic lathe.
5) utomatic lathe.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
3/23
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
4/23
3>. D$+$ +9 '*$#!"'+.
Filing i# the %roce## of remo'ing +ar# #har% corner# and feed mar# on a -or
%iece +, remo'ing 'er, #mall amount of metal.
31. D$+$ "$ *#',$)) @9#''%+9@.
&roo'ing i# the %roce## of reducing the diameter of the -or %iece o'er a 'er,
narro- #urface.
33. P!#"+9 ' ) !+ '*$#!"'+ '
Cutting a -or %iece after machining.
3. W!" ) #$!+9 !+0 -'#+9 '*$#!"'+ 2
"eaming * t i# the o%eration of fini#hing and #ie a alread, drilled hole.
oring * t i# the %roce## of enlarging a alread, drilled hole.
34. S"!"$ "$ *'#"!+" #$("$) ' ,!*)"!+ !+0 "(##$" !"$.
l)ed
2) (ead #toc.
3) Turret head
4) addle
5)Cro## #lide.
35. W!" ";*$ ' $,!+) ) ()$0 '# +0$+9 "$ "(##$" $!0 '# "$ +$"'*$#!"'+2
&ene'a or nde9ing mechani#m.
38. N!$ !+; '(# 7'#6 '0+9 0$%,$).
.1) Collet#
2) Chuc#
3) Fi9ture#
4) o-er chuc#
3?. N!$ !+; '(# "'' '0+9 0$%,$)1) ;ulti%le cutter holder.
2)
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
5/23
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
6/23
. W!" !#$ "$ 0$#$+" !0()"$+") !0$ + R'(+0 ,'(+ 0#+9
!,+$2
1. rm and ta+le mo'e# u% and do-n to accommodate the -or %iece.
2. rm and ta+le ma, +e mo'ed in an arc u% to 18$ around the column
3. The ta+le ma, +e rotated 36$ a+out it# o-n a9i#.
. L)" "$ *!#" +%'%$0 + "$ (* #9" 0#+9 !,+$2
1. a#e
2. Column
3. Ta+le
4. (ead
5. %indle =uill and drill head a##em+l,.
11. L)" "$ *!#" +%'%$0 + "$ #!0! 0#+9 !,+$2
1. a#e
2. Column
3. "adial arm
4. Drill head
13. W!" !#$ "$ 7'#6 '0+9 0$%,$) ()$0 + 0#+9 !,+$2
1. T +olt and clam%
2. te% +loc
3. ngle %late
4. Drill 0ig.
1. W!" !#$ "$ 0$#$+" '*$#!"'+) *$#'#$0 + 0#+9 !,+$2
1.Driling
2. "eaming
3.oring
4. Counter +oring
5. Counter #ining6. %ot facing
7. Ta%%ing
8./a%%ing
!.&rinding.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
7/23
14. W!" ) #$!+92
t i# the #econdar, o%eration after the drilling o%eration ha# +een %erformed to
%roduce the occurate hole or fini#h the hole.
15. W!" ) -'#+92
t i# u#ed to enlarge the hole +, mean# of ad0u#ta+le cutting tool -ith onl, one
cutting edge.
18. W!" ) ,'(+"$# -'#+92
t i# u#ed to enlarge the end of the hole c,lindricall, and the enlarge hole form# the
#=uare #houlder# -ith original hole.
1?. W!" ) "!**+92
t i# the o%eration to %roduce internal thread# +, u#ing ta% tool.
1. L)" "$ ";*$) ' 0#2.
1. Flat or #%ade drill
2. traight fluted drill
3. T-o li% t-i#t drill
4. Centre drill.
1
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
8/23
34. W!" ) ,#,(!# !+02
The c,lindricall, ground #urface ad0acent to the cutting edgeon the leading edge
of the land.
35. W!" ) "$ !0%!+"!9$ ' ("$2
The flute i# the helical groo'e. t i# u#ed to remo'e the chi% through the helical
groo'e and the cutting fluid -ill enter through the flute #urface.
38. W!" ) *#!#; ,$!#!+,$2
The %ortion of the land remo'ed to %ro'ide clearance immediatel, +ehind the
cutting edge.
3?. W!" ) )$,'+0!#; ,$!#!+,$2
The %ortion of the land remo'ed to %ro'ide clearance +ehind the %rimar, clearance
or circular land.
UNIT III
1. W!" ) )!*$#2
The #ha%er i# a reci%rocating t,%e of machine tool intended to %roduce flat #urface.
The#e #urface# ma, +e horiontal 'ertical or inclined.
3. C!)); "$ )!*$# !,,'#0+9 "' "$ #$,*#',!"+9 ' #!2i. Cran t,%e
ii. (,draulic t,%e
iii. &eared t,%e.
. C!)); "$ )!*$# !,,'#0+9 "' "$ "#!%$ !+0 *')"'+ ' "$ #!2
a. (oriontal t,%e
+. ?ertical t,%e
c. Tra'eling head t,%e.
4. C!)); "$ )!*$# !,,'#0+9 "' "$ 0$)9+ ' "!-$2a. tandard t,%e
+. >ni'er#al t,%e.
5. C!)); "$ )!*$# !,,'#0+9 "' "$ ";*$ ' ,(""+9 )"#'6$2
a. u#h t,%e
+. Dra- t,%e
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
9/23
8. L)" "$ 0$#$+" ";*$) ' *!#") +%'%$0 + "$ )!*$#2
a. a#e
+. Column
c. Cro## rail
d. addle
e. Ta+le
f. "am
h. Tool head.
?. L)" "$ *!#") + "'' $!02
a. -i'el +a#e
+. ?ertical #lide
c. %ron
d. Tool %o#t
. L)" "$ *!#") + !*#'+2
a. Cla%%er +o9
+. Cla%%er +loc
c. Tool %o#t
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
10/23
1. W!" ) "$ ()$ ' )!*$# 0'9 + ;0#!(, )!*$# $,!+)2
t i# u#ed to change the %o#ition of the flo- to facilitate the reci%rocating motion.
14. W!" !#$ "$ !0%!+"!9$) ' ;0#!(, )!*$# $,!+)2
a. The cutting and return #%eed are %artiall, con#tant throughout the #troe.
+. nfinite num+er of cutting ma, +e o+tained from ero to ma9imum 'alue and
control ea#ier.
15. W!" !#$ "$ 7'#6 '0+9 0$%,$) ()$0 + )!*$#2
1. Clam%ing the 'i#e
2. Clam%ing on the ta+le
3. Clam%ed to the angular %late.
18. W!" !#$ "$ 0$%,$) ()$0 "' '0 "$ 7'#6 + "' "$ "!-$2a. T +olt and clam%#
+. to% %in#
c. tri% and #to% %in#
1?. W!" !#$ "$ 0$#$+" '*$#!"'+) *$#'#$0 -; ()+9 )!*$#2
1. (oriontal #urface
2. ?ertical #urface
3. ngular #urface
4. Cutting #lot and e, -a,#
5. rregular #urface
1. W!" ) *!+$#2
The %laner lie a #ha%er i# a machine tool %rimaril, intended to %roduce %lane and
flat #urface# +, a #ingle %oint cutting tool#. it i# u#ed to machining a large -or
%iece -hich cannot accommodate +, #ha%er ta+le.
1
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
11/23
3>. W!" !#$ "$ ";*$) ' *!+$#2
a. Dou+le hou#ing %laner
+.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
12/23
3?. L)" "$ $,!+) ()$0 "' 0#%$ "$ "!-$2
1.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
13/23
5. L)" "$ )"!+0!#0 ,!*+9 0$%,$) ()$0 + *!+$#.
1. (ea', dut, 'ice
2. T +olt and clam%#
3. ngle %late
4. to%#
8. W!" ) "$ ()$ ' *!+$# !,62
t i# u#ed to #u%%ort the o'erhanging %art#.
?. L)" "$ *!+$# '*$#!"'+.
1. (oriontal #urface
2. ?ertical #urface
3. lanning cur'ed #urface#
4. lanning #lot# and groo'e#.
W!" ) )'""$#2
t i# fall# under the categor, of reci%rocating t,%e# of machine tool #imilar to
#ha%er.
< W!" ) "$ 0$#$+,$ -$"7$$+ )!*$# !+0 )'""$#2
1. n #ha%er ram reci%rocate a+out horiontal a9i# +ut #lotter the ram reci%rocate
a+out 'ertical a9i#.
4>. W!" ) "$ 0$#$+,$ -$"7$$+ %$#",! )!*$# !+0 )'""$#2n 'ertical #ha%er the holding the tool ma, al#o reci%rocate at an angle to the
horiontal ta+le in addition to the 'ertical #troe.
41. W!" ) "$ ()$ ' )'""$#2
t i# u#ed to cutting groo'ee,-a,and #lot# of 'ariou# #ha%e#.
43. W!" !#$ "$ ";*$) ' )'""$#2
1. uncher #lotter
2. reci#ion #lotter
4. W!" ) *(+,$# )'""$#2
The %uncher #lotter i# hea', rigid machine de#igned for remo'al of large amount
of -or%iece#. t i# dri'en +, a #%iral %inion me#hing -ith the rac teeth on the
under #ide of the ram.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
14/23
44. W!" !#$ "$ *!#") +%'%$0 + )'""$#2
1. a#e
2. Column
3. addle
4. Cro## #lide
5."otating ta+le
6. "am and tool head.
45. L)" "$ #! 0#%+9 $,!+) ()$0 + )'""$#.
1. @hith -orth =uic return mechani#m
2. ?aria+le #%eed re'er#i+le motor dri'e mechani#m.
3. (,draulic dri'e.
48. L)" "$ $$0 +%'%$0 + )'""$#.
1. /ongitudinal feed2. Cro## feed
3. Circular feed.
4? L)" "$ )'""$# '*$#!"'+.
1. ;achining flat #urface#
2. C,lindrical #urface#
3. rregular #urface#.
4. lot e, -a,# and groo'e#.
UNIT
1. E*!+ "$ ,(""+9 )!*+9 *#',$))2
The re=uired #ha%e of metal i# o+tained +, remo'ing the un-anted material from
the -or %iece
in the form of chi%# i# called cutting #ha%ing. 9am%le Turning Drilling ;illing
oring etc.
3. C!)); "$ #$!"%$ '"'+ -$"7$$+ 7'#6 *$,$ !+0 ,(""+9 "''.
:i) "otation of -or again#t the tool. 9am%le Turning
:ii) "otation of tool again#t -or %iece. 9am%le Drilling ;illing
:iii) linear mo'ement of the -or %iece again#t the tool. 9am%le laner
:i') /inear mo'ement of the tool again#t the -or. 9am%le ha%er.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
15/23
. W!" !#$ ! "$ 0$#$+" ";*$) ' ,(""+9 "''2
:i) ingle %oint cutting tool
:ii) ;ulti%l, %oint cutting tool.
4. C!)); "$ %!#'() !+9$) + ,(""+9 "''2
1) ac rae angle
2) ide rae angle
3) nd relief angle
4) ide relief angle
5) ide cutting angle
6) nd cutting angle.
5. W!" ) "'' )9+!"(#$2
The 'ariou# angle# of tool# are mentioned in a numerical num+er in %articular
order. That order i# no-n a# tool #ignature.
8. W!" ) $$," ' -!,6 #!6$ !+9$ !+0 $+"'+ "$ ";*$)2
ac rae angle of tool i# increa#e# the #trength of cutting tool and cutting action.
t can +e cla##ified into t-o t,%e#.
1. o#iti'e rae angle.
2. Aegati'e rae angle.
?. W!" ) )0$ #!6$ !+9$ !+0 M$+"'+ ") $$,")2
The angle +et-een the tool face and the line %arallel to the +a#e of the tool. t i#
u#ed to control chi% flo-.
. W!" ) ,$!#!+,$ !+9$ !+0 $+"'+ "$ ";*$)2
The#e are the #lo%e# ground do-n-ard# from the cutting edge#. The clearance
angle can +e cla##ified into t-o t,%e#.
i ide relief angle.
ii. nd relief angle.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
16/23
d. To machine the metal +elo- recommended cutting #%eed#.
11. W$+ 7 "$ +$9!"%$ #!6$ !+9$) -$ ()$02
a. To machine high #trength allo,#.
+. The machine tool# are more rigid.
c.The feed rate# are high.
d. To gi'e hea', and interru%ted cut#.
13. C!)); "$ ";*$) ' $"! ,(""+9 *#',$))2
The metal cutting %roce##e# are mainl, cla##ified into t-o t,%e#.
a.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
17/23
:i') /arge rae angle
:') har% cutting edge
:'i) ro%er cutting fluid
:'ii) /o- friction +et-een tool face and chi%#.
1
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
18/23
34. W!" !#$ "$ ,(""+9) '#,$) !,"+9 '+ "$ ,(""+9 "''2
During the cutting %roce## the follo-ing three com%onent of cutting force# acting
mutuall, right angle#.
a. Feed force F9 act# in a horiontal %lane +ut in the Direction o%%o#ite to feed.
+. Thru#t force F, act# in a direction %er%endicular to the generated #urface.
c. Cutting force F in the direction of the main cutting motion.
38. W!" !#$ "$ !))(*"'+) !0$ -; $#,!+" ,#,$2
a. The chi% formation -ill +e continuou# -ithout +uilt u% edge.
+. During cutting %roce## cutting 'elocit, remain# con#tant
c. The cutting tool ha# a #har% cutting edge #o that it doe# not mae flan contact to
the -or%iece.
3?. W!" ) $"! #$'%! #!"$2
t i# defined a# the 'olume of metal remo'ed in unit time. t i# u#ed to calculatetime re=uired to remo'e #%ecified =uantit, of material from the -or %iece.
3. W!" !#$ "$ !))(*"'+) !0$ + $$ !+0 S!$#) "$'#;2
a. The -or ahead of the tool +eha'e# a# ideal %la#ticma##
+. There e9i#t# a #hear %lane -hich #e%arate# the chi% and -or %iece
c. Ao hardening in chi% occur#.
3
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
19/23
d. h,#ical %ro%ertie# of -or material#.
e. ;ethod of %roduction of the -or material#.
3. W!" !#$ ! "$ "'' %!#!-$) !$,"+9 "$ !,+!-";2
a. Tool geometr, and tool material.
+. Aature of engagement of tool -ith the -or.
c. "igidit, of tool.
. W!" !#$ "$ !,+$ %!#!-$) !$,"+9 "$ !,+!-";2
a. "igidit, of machine.
+. o-er and accurac, of the machine tool.
4. H'7 "$ !,+!-"; ,!+ -$ $%!(!"$02
The follo-ing criteria #ugge#ted for e'aluating machina+ilit,.
a. Tool life %er grind +. "ate of remo'al %er tool grind
c. ;agnitude of cutting force# and %o-er con#um%tion. urface fini#h.
e. Dimen#ional #ta+ilit, of fini#hed -or.
f. (eat generated during cutting.
g. a#e of chi% di#%o#al.
h. Chi% hardne## #ha%e and #ie.
5. M$+"'+ "$ !0%!+"!9$ ' 9 !,+!-";2
a. &ood #urface fini#h can +e %roduced
+. (igh cutting #%eed can +e u#ed
c. /e## %o-er con#um%tion
d. ;etal remo'al rate i# high
e. /e## tool -ear.
8. W!" ) !,+!-"; +0$2
t i# a com%ari#on of machina+ilit, of different material to #tandard material. >
material #tandard for 1$$ machina+ilit, i# 1112 hot rolled #teel.
;achina+ilit, inde9 Cutting #%eed of #tandard #teel for 2$ minute# tool life
Cutting #%eed of metal in'e#tigated for 2$ minute# tool life
?. C!)); "$ "'' 7$!#2
The tool -ear i# generall, cla##ified a# follo-#
:i) Flan -ear or crater -ear
:ii) Face -ear
:iii) Ao#e -ear
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
20/23
. H'7 "'' $ ) 0$+$02
Tool life i# defined a# time ela%#ed +et-een t-o con#ecuti'e tool re #har%ening.
During thi# %eriod tool #er'e# effecti'el, and efficientl,.
. W!" !#$ "$ !,"'#) !$,"+9 "'' $2
i. Cutting #%eed
ii. Feed and de%th of cut
iii. Tool geometr,i'. Tool material
'. Cutting fluid
'i. @or material
'ii. "igidit, of -or tool and machine.
43. W!" !#$ ! "$ !,"'#) ,'+)0$#$0 '# )$$,"'+ ' ,(""+9 )*$$02
i. Tool life
ii.ro%ertie# of material +eing machined
iii."ate of feed
i'.De%th of cut
'.Tool geometr,.
?i.Cutting fluid u#ed
'ii.T,%e of machining %roce##
'iii.urface fini#h to +e o+tained.
4. W!" !#$ "$ !,"'#) )'(0 -$ ,'+)0$#$0 '# )$$,"'+ ' "'' !"$#!)2
i. ?olume of %roduction
ii. Tool de#ign
iii. T,%e of machining %roce##i'. h,#ical E Chemical %ro%ertie#
'. "igidit, and condition of machine.
44. W!" !#$ "$ *'#"!+" ,!#!,"$#)",)2
i. (ot hardne##
ii. @ear re#i#tance
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
21/23
iii. Toughne##
i'. /o- friction
'. Co#t of tool
'i. (igh thermal conducti'it,
'ii. "e#i#tance to thermal #hoc
'iii. a#, to grind and #har%en.
45. N!$ !+; '(# "'') !"$#!2
i. Car+on tool #teel
ii. (igh #%eed #teel
iii. Cemented car+ide#
i'. Ceramic#
'. Diamond#
48. W!" ) "$ (+,"'+ ' ,(""+9 (0)2i. t i# u#ed to cool the cutting tool and -or %iece
ii. t lu+ricate# the cutting tool and thu# reduce# the co*efficient of friction +et-een
tool and -or
iii. t im%ro'e# the #urface fini#h a# #tated earlier
i'. t cau#e# the chi%# to +rea u% into #mall %art#
'. t %rotect# the fini#hed #urface from corro#ion
'i. t -a#he# a-a, the chi%# from the tool. t %re'ent# the tool from fouling
'ii. t %re'ent# corro#ion of -or and machine.
4?. W!" !#$ "$ *#'*$#"$) ' ,(""+9 (02
i. t #hould ha'e good lu+ricant %ro%ertie#
ii. (igh heat a+#or+ing ca%acit,
iii. t #hould ha'e a high #%ecific heat high heat conducti'it, and high film co*
efficient
i'. (igh fla#h %oint.
'. t #hould +e odorle##
'i. t #hould +e non*corro#i'e to -or and tool
'ii.t #hould ha'e lo- 'i#co#it, to %ermit free flo- of the li=uid.
4. W!" ) -(" (* $09$2
During cutting %roce## the interface tem%erature and %re##ure i#.
4
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
22/23
ii.The chi% flo-# o'er the tool face and the direction of chi%*flo- 'elocit, i#
normal to the cutting edge.
iii.The cutting edge clear# the -idth of the -or %iece on either end#. :i.e. Ao #ide
flo-)
i'The ma9imum chi% thicne## occur# at it# middle.
-
8/9/2019 MACHINING PROCESS 2 MARK.docx
23/23
. W!" ) %$#",! +9 !,+$2
n 'ertical milling machine the #%indle i# mounted 'ertical or %er%endicular to the
ta+le.
4. W!" !#$ "$ *!#") ()$0 + "$ ,'(+ !+0 6+$$ ";*$ +9 !,+$2
1. a#e
2. Column
3. Knee
4.Ta+le
5.
top related